We will continue our step-by-step approach to diagnosing a pool heating system by considering what to do when the light in the command pad on the best of your Sta-Rite pool and day spa heating unit that is labeled “service heating unit” is lit. (We will go here proceed with the presumption that you understand everything from sector one.) This time you will have to get rid of the sides from the heating unit just before disconnecting power to the heating system to ensure that you can check out the codes on the board attached to the topside. After removing the sides, you will certainly see the large topside that is still connected to the heating unit. Here the topside is a metal panel that keeps the topside in position. Under this panel there are 2 securing pins (cotter pins). Meticulously remove the two pins as well as store them someplace protected until reassembly. Gently get rid of the leading and turn it inverted. You will certainly see a light lit on the board you are taking a look at when you turn the topside over. The light will certainly be next to a code that is created on the board.

The first code that you'll see on the left side of the board will be PS. This is the code for the tension switch. We covered the stress button in segment one. If this light is lit return to segment one as well as examine that section. If needed follow the guidelines to change the tension button.

The next code you'll see on the board is HLS. If you have a controller on the system you will need to bypass it at this time. You will should thoroughly separate the power from the heating system. After you make certain that the power is disconnected, you will certainly need to find as well as open the high-voltage cabinet. This cupboard is a steel box in the middle of the heater. If you are checking out the cupboard, there is typically a screw on the great best side. Release the screw and also the door will certainly turn down towards you. You should be incredibly mindful when working in this box and also only doing this when you make sure that the power to the heating system is OFF.

You will certainly have to bypass the firewall program safety interface. To do this you will need a brief cord with stab-tab ports. If you have a controller and it was appropriately mounted the wire might have been left in the box by the tech which installed the controller. If not you will certainly need to make this jumper cord. At this factor look in your owner's manual to find both appropriate pins to link to. If you have a controller or are making use of a fireman's button this is where your command must be attached. If you have a controller and also it is not hooked up here, it could be the source of your problems and also either have an accredited tech deal with the issue or correct it yourself.

You need to take care not to place the jumper wire on the power terminals or you will certainly ruin your heating unit by burning up the digital device. Usage your handbook to find where the firefighter's switch is expected to be affixed and also very carefully affix your jumper in between these terminals. If you now activate the power and also the heater functions with no problems, your issue hinges on the controller or the wiring visiting the controller. You will certainly have to problem shoot this technology.

If you still have the very same problem with your heater. (“service heating unit” light comes on), leave the jumper in position as well as validate that the pump is on and that you have good water flow. See to it once more with your meter that the stress switch is not cycling. It needs to check out as a dead short. (See section one) With excellent water flow confirmed and the “solution heater” light on, your problem can be among the thermo-regulators in the security device.

Because we began this with the indication light on the board lit beside HLS, the initial factor we are going to check are the wires visiting the high limitation switch. The higher limit button is situated near all-time low on the left side of the water manifold as you admit. To see it you should remove the side cover on the water manifold. The screw that holds the cover is on the best of it. You have to see to it that the orange cords going to the switch are intact, connected and not rusty. If the circuitry excels, utilize your multi-meter to inspect that the higher limitation switch reviews as a dead brief. If it checks out open as well as the water is not above 104 F, switch out the high limitation button. If this does not repair your issue you might have a bad control board as well as it will have to be replaced. Testing the control board is a very engaged procedure and will certainly be dealt with in a later sector.

This is completion of sector two as well as has actually taken you through part of the security circuit in the heater and 2 of the sign lights on the board. We will advance with our organized diagnose of troubles on the Sta-Rite pool and also medical spa heater in the next sector.

I have been involved with repair services, tools replacement, and also the concept as well as execution of customized technologies. I am licensed as well as educated by a number of large manufacturers such as Hayward, Pentair, Goldline and also Sta-Rite. I am a professional in taking care of warranty service for swimming pool and health club equipment consisting of pumps, filters, heat pumps, illumination and choice sanitation.